A review of previous studies shows that there are two general views on how to determine demand in structures through incremental nonlinear static analysis. In the first view, multi-modal methods are used to determine demand in structures. In this view, the applied load pattern is applied to the structure according to the shape of each vibration mode, assuming that the structure deformation foll...

Time-lapse (4D) seismic data sets have proven to be extremely useful for reservoir monitoring. Seismic-derived impedance estimates are commonly used as a 4D attribute to constrain updates to reservoir fluid flow models. However, 4D seismic estimates of P-wave impedance can contain significant errors associated with the effects of seismic noise and the inherent instability of inverse methods. Th...

objectives: the aim of present study was to investigate the effect of cognitive rehabilitation, a new and non-pharmacological approach to reduce memory and other cognitive deficits in alzheimer's disease. methods & materials: this study was a quasi-experimental research, in singlesubject study-with control group- and based on an a-b design. that was conducted in two groups of control and e...

Coda-wave interferometry is a technique to detect small seismic velocity changes using phase changes in similar waveforms from repeating natural or artificial sources. Seismic interferometry is another technique for detecting seismic velocity changes from cross-correlation functions of ambient seismic noise. We simultaneously use these two techniques to clarify seismic velocity changes at Sakur...

The effect of intelligent semi-active thermal exchange-fuzzy controller in structural rehabilitation by attenuating seismic responses of structural systems is investigated. In the suggested control system, MR dampers and sensors are employed as a semi-active controller. Resultant control forces of MR damper are administrated by providing external voltage supply, during the earthquakes and high ...

Seismic hazards represent a permanent threat to buildings. The paper argues that risk-oriented approaches provide an interesting solution account for the long-term resilience of buildings, both design new structures and rehabilitation existing ones. proposed research draws upon standard definition risk as function vulnerability, hazard exposure develop optimization-based methodology appraisal b...

Results of an experimental program 13 confined masonry walls rehabilitated with different techniques are presented. All specimens were built to full-scale aspect ratio (height length) 1. Vertical confining elements one wall 6.4 mm diameter welded wire reinforcing cages. Before rehabilitation, 11 the initially tested induce repairable damage; other 2 strengthened in undamaged state. During testi...

Abstract This study evaluates the dynamic behavior and performance of vital reinforced concrete (RC) public building [Ministry Higher Education (MHE)] designed in compliance with old Syrian (non-seismic) code. The real non-linear MHE has been checked by detailed numerical analyses (finite elements method—FEM) validated a series ambient noise measurements carried out on-site. modeling approach f...

Seismic modeling aids the geophysicists to have a better understanding of the subsurface image before the seismic acquisition, processing, and interpretation. In this regard, seismic survey modeling is employed to make a model close to the real structure and to obtain very realistic synthetic seismic data. The objective of this study is to analyze the resolution and illumination of the fault by...

Steel bracing members are widely used in steel structures to reduce lateral displacement and dissipate energy during earthquake motions. Concentric steel bracing provide an excellent approach for strengthening and stiffening steel buildings. Using these braces the designer can hardly adjust the stiffness together with ductility as needed because of buckling of braces in compression. In this stu...